A waterproof transducer

Abstract

The utility model discloses a waterproof transducer, including sleeve, sleeve's inside install piezoelectric ceramic crystal, and piezoelectric ceramic crystal's top end is connected with transducer, and the top of transducer penetrates sealing flange and is connected with amplitude transformer, the utility model discloses, the outside of the outside of conversion head and top shell all adopt ABS material, and when processing, conversion head is fixed second buffer rubber ring through the mode of secondary injection molding on the outside of conversion head, and second buffer rubber ring adopts medical grade silica gel material, and the outer edge of second buffer rubber ring is equipped with two layers ring -mounted film, and is connected as integral type structure with the inner wall of top shell through the mode of ultrasonic welding, make the top of top shell and conversion head keep sealed state between, and the mode of screw connection, has improved the dismouting convenience of top shell, and it is convenient according to the loss degree of second buffer rubber ring and carries out the replacement quickly.

Description

Technical Field

[0001] This utility model specifically relates to the technical field of transducers, and specifically to a waterproof transducer. Background Technology

[0002] A transducer, also known as an active sensor, is a device that enables the conversion between different forms of energy, such as electrical energy, mechanical energy, or acoustic energy. In the medical industry, waterproof transducers are often required. Medical waterproof transducers must use medical-grade materials and a double-sealed structure to adapt to sterilization processes and human contact scenarios, while ensuring stable transduction signals.

[0003] Currently used waterproof transducers typically employ a glue injection method to fill the joints and seams of the transducer's outer shell to improve the overall waterproof effect. However, as the usage time increases, the medical-grade epoxy resin used for filling will harden and wear out, causing cracks and reducing the waterproof effect. Furthermore, bacteria can easily grow in the cracks and gaps. The glue injection process also makes parts replacement difficult, thus posing drawbacks in use. Utility Model Content

[0004] The purpose of this utility model is to provide a waterproof transducer to solve the problems mentioned in the background art. As the usage time increases, the medical-grade epoxy resin filling hardens and wears out, causing cracks, which leads to a decrease in waterproof effect. Furthermore, bacteria can easily grow in the cracks, and the injection molding process makes it difficult to replace parts. Therefore, there are drawbacks in its use.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A waterproof transducer includes a sleeve, inside which a piezoelectric ceramic crystal is installed, and the top of the piezoelectric ceramic crystal is connected to a transducer. The top of the transducer is connected to an amplitude transformer via a through-sealing flange. The sealing flange is bolted to the top of the sleeve, and a clamping plate is provided between the sealing flange and the sleeve. The inner wall of the clamping plate is in close contact with the top outer wall of the transducer, and a rubber gasket is provided on the top of the clamping plate.

[0007] As a further embodiment of this utility model: the top of the sleeve is screwed to a middle shell, and the top inner side of the middle shell is provided with a first buffer rubber ring; the first buffer rubber ring wraps around the outside of the pressure plate, and the pressure plate is fixed to the upper part of the outer wall of the amplitude transformer; the top of the amplitude transformer passes through the top of the middle shell and is connected to the converter head, and the outer wall of the converter head is wrapped with a second buffer rubber ring, while the outer side of the second buffer rubber ring is sealed to the inner top wall of the top shell; the bottom of the top shell is threaded to the top of the middle shell.

[0008] As a further embodiment of this utility model, the bottom of the sleeve is screwed with a sealing cap.

[0009] As a further embodiment of this utility model: the centerline of the sleeve, the centerline of the sealing flange, and the centerline of the transducer are all on the same vertical straight line.

[0010] As a further embodiment of this invention: the outer wall of the transducer does not contact the inner wall of the sealing flange.

[0011] As a further embodiment of this utility model: the axis of the transducer and the axis of the amplitude transformer are on the same vertical straight line.

[0012] As a further embodiment of this utility model: the outer wall of the first buffer rubber ring is in close contact with the inner wall of the middle shell, and the middle shell does not contact the amplitude transformer;

[0013] As a further embodiment of this utility model: a sealing ring is provided at the top of the middle shell, and the sealing ring is located between the middle shell and the amplitude transformer.

[0014] As a further embodiment of this utility model: the connection between the converter head and the amplitude transformer is an interference fit connection, and a vibration rod is installed on the top of the converter head.

[0015] As a further aspect of this utility model, the connection between the conversion head and the vibration rod is an interference fit connection.

[0016] As a further embodiment of this utility model: the axis of the vibration rod, the axis of the conversion head, the axis of the second buffer rubber ring, and the axis of the amplitude transformer are all on the same vertical straight line.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This utility model includes a top shell, a converter head, and a second buffer ring. The outer surface of the converter head and the top shell are both made of ABS material. During processing, the second buffer ring is fixed to the outer surface of the converter head through secondary injection molding. The second buffer ring is made of medical-grade silicone material. The outer edge of the second buffer ring has two layers of annular film, which are connected to the inner wall of the top shell as an integral structure by ultrasonic welding. This ensures that the top of the top shell and the converter head are sealed. The threaded connection improves the ease of disassembly and assembly of the top shell, and facilitates quick replacement according to the wear level of the second buffer ring.

[0019] 2. This utility model includes a sleeve and a middle shell, both of which are made of 316L stainless steel. The sleeve and the middle shell are connected by screws, and waterproof sealant is applied to the connection between the sleeve and the middle shell and inside the screw holes to prevent water seepage through tiny gaps. At the same time, the inside of the sleeve is filled with epoxy resin potting compound to completely encapsulate the piezoelectric ceramic crystal, isolate moisture, eliminate resonance, and reduce energy loss. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0021] Figure 2 This is a three-dimensional structural diagram of the sealing ring in this utility model.

[0022] Figure 3 This is a utility model Figure 2 Another perspective on image recognition.

[0023] Figure 4 This is a three-dimensional structural diagram of the pressure plate in this utility model.

[0024] Figure 5 This utility model Figure 4 Another perspective on image recognition.

[0025] Figure 6 This utility model Figure 1 Another perspective on image recognition.

[0026] Figure 7 This is a utility model Figure 6 Cross-sectional view along the AA direction.

[0027] In the diagram: 1-sleeve, 2-piezoelectric ceramic crystal, 3-transducer, 4-clamping plate, 5-rubber gasket, 6-amplifier, 7-pressure plate, 8-middle shell, 9-first buffer rubber ring, 10-sealing ring, 11-top shell, 12-converter head, 13-second buffer rubber ring, 14-vibration rod, 15-sealing cover, 16-sealing flange. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-7In this embodiment of the utility model, a waterproof transducer includes a sleeve 1. A piezoelectric ceramic crystal 2 is installed inside the sleeve 1, and a transducer 3 is connected to the top of the piezoelectric ceramic crystal 2. The top of the transducer 3 is connected to an amplitude transformer 6 via a through-sealing flange 16. The sealing flange 16 is screwed to the top of the sleeve 1, and a clamping plate 4 is provided between the sealing flange 16 and the sleeve 1. The inner wall of the clamping plate 4 is tightly fitted against the top outer wall of the transducer 3, and a rubber gasket 5 is provided on the top of the clamping plate 4. The top of the sleeve 1 is screwed to the middle shell 8, and the top inner side of the middle shell 8 is provided with a first buffer rubber ring 9; the first buffer rubber ring 9 wraps around the outside of the pressure plate 7, and the pressure plate 7 is fixed to the upper part of the outer wall of the amplitude transformer 6; the top of the amplitude transformer 6 passes through the top of the middle shell 8 and is connected to the converter head 12, and the outer wall of the converter head 12 is wrapped with a second buffer rubber ring 13, while the outer side of the second buffer rubber ring 13 is sealed to the top inner wall of the top shell 11; the bottom of the top shell 11 is threaded to the top of the middle shell 8.

[0030] More specifically, the inside of sleeve 1 is filled with epoxy resin potting compound, which completely encapsulates the piezoelectric ceramic crystal 2.

[0031] As a further explanation of this embodiment, the outer side of the sleeve 1 is provided with a number of strip-shaped vertical plates distributed at equal angles about the vertical axis of the sleeve 1, which can improve heat dissipation efficiency and increase surface friction.

[0032] In this embodiment, a sealing cap 15 is screwed to the bottom of the sleeve 1.

[0033] More specifically, the bottom of the sealing cap 15 is provided with a sealing ring and an external pipeline.

[0034] As a further explanation of this embodiment, the wires connected to the piezoelectric ceramic crystal 2 are led out through the sealing ring and sealing external pipe provided at the bottom of the sealing cover 15 and electrically connected to the external power supply.

[0035] In this embodiment, the centerline of the sleeve 1, the centerline of the sealing flange 16, and the centerline of the transducer 3 are all on the same vertical straight line.

[0036] More specifically, the coaxial connection improves the stability of transducer 3 during use.

[0037] In this embodiment, the outer wall of the transducer 3 does not contact the inner wall of the sealing flange 16.

[0038] More specifically, the sealing flange 16 is fitted with the sleeve 1 to clamp the pressing plate 4 and the rubber gasket 5.

[0039] In this embodiment, the centerline of the transducer 3 and the centerline of the amplitude transformer 6 are on the same vertical straight line.

[0040] More specifically, the coaxial transducer 3 and amplitude transformer 6 can reduce vibration amplitude and energy loss.

[0041] In this embodiment, the outer wall of the first buffer rubber ring 9 is in close contact with the inner wall of the middle shell 8, and the middle shell 8 does not contact the amplitude transformer 6.

[0042] In this embodiment, a sealing ring 10 is provided on the top of the middle shell 8, and the sealing ring 10 is located between the middle shell 8 and the amplitude transformer 6.

[0043] More specifically, the first buffer rubber ring 9, which is filled between the amplitude transformer 6 and the inner wall of the middle shell 8, can absorb vibration and improve the sealing of the connection.

[0044] As a further illustration of this embodiment, the sealing ring 10 improves the sealing performance at the connection between the middle shell 8 and the top shell 11.

[0045] In this embodiment, the converter head 12 and the amplitude transformer 6 are connected by an interference fit, and a vibration rod 14 is installed on the top of the converter head 12.

[0046] More specifically, the interference fit connection improves the ease of assembly and disassembly between the converter head 12 and the amplitude transformer 6.

[0047] In this embodiment, the connection between the conversion head 12 and the vibration rod 14 is an interference fit connection.

[0048] More specifically, the interference fit connection improves the ease of assembly and disassembly between the adapter 12 and the vibration rod 14.

[0049] In this embodiment, the axis of the vibration rod 14, the axis of the converter head 12, the axis of the second buffer rubber ring 13, and the axis of the amplitude transformer 6 are all on the same vertical straight line.

[0050] To be more specific, different shapes and uses of the vibration rod 14 can be selected according to the usage environment.

[0051] As a further explanation of this embodiment, the top shell 11, the adapter 12, and the second buffer rubber ring 13 are an integral structure, which facilitates overall disassembly and replacement.

[0052] The working principle of this utility model is as follows: When it is necessary to replace the converter head 12, first remove the vibration rod 14, then pull the converter head 12 upwards to disengage the lower part of the converter head 12 from the top of the amplitude transformer 6, and then rotate the top shell 11 counterclockwise until the top shell 11 is disengaged from the middle shell 8; then replace the new converter head 12, rotate the top shell 11 clockwise to secure the top shell 11 to the middle shell 8, press the converter head 12 downwards to re-interference fit the bottom of the converter head 12 with the top of the amplitude transformer 6, and then insert the vibration rod 14 into the top of the converter head 12.

[0053] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0054] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A waterproof transducer, characterized in that: The device includes a sleeve (1), inside which a piezoelectric ceramic crystal (2) is installed, and a transducer (3) is connected to the top of the piezoelectric ceramic crystal (2). The top of the transducer (3) is connected to the amplitude transformer (6) through a sealing flange (16). The sealing flange (16) is screwed to the top of the sleeve (1), and a clamping plate (4) is provided between the sealing flange (16) and the sleeve (1). The inner wall of the clamping plate (4) is in close contact with the top outer wall of the transducer (3), and a rubber gasket (5) is provided on the top of the clamping plate (4). The top of the sleeve (1) is screwed to the middle shell (8), and the top of the inner side of the middle shell (8) is provided with a first buffer rubber ring (9); the first buffer rubber ring (9) is wrapped around the outside of the pressure plate (7), and the pressure plate (7) is fixed to the upper part of the outer wall of the amplitude transformer (6); the top of the amplitude transformer (6) passes through the top of the middle shell (8) and is connected to the converter head (12), and the outer wall of the converter head (12) is wrapped with a second buffer rubber ring (13), and the outer side of the second buffer rubber ring (13) is sealed to the top inner wall of the top shell (11); the bottom of the top shell (11) is threaded to the top of the middle shell (8).

2. The waterproof transducer according to claim 1, characterized in that: The bottom of the sleeve (1) is screwed with a sealing cap (15).

3. A waterproof transducer according to claim 2, characterized in that: The centerline of the sleeve (1), the centerline of the sealing flange (16) and the centerline of the transducer (3) are all on the same vertical straight line.

4. A waterproof transducer according to claim 1, characterized in that: The outer wall of the transducer (3) does not contact the inner wall of the sealing flange (16).

5. A waterproof transducer according to claim 4, characterized in that: The axis of the transducer (3) and the axis of the amplitude transformer (6) are on the same vertical line.

6. A waterproof transducer according to claim 1, characterized in that: The outer wall of the first buffer rubber ring (9) is in close contact with the inner wall of the middle shell (8), and the middle shell (8) does not contact the amplitude transformer (6).

7. A waterproof transducer according to claim 1, characterized in that: The top of the middle shell (8) is provided with a sealing ring (10), and the sealing ring (10) is located between the middle shell (8) and the amplitude transformer (6).

8. A waterproof transducer according to claim 1, characterized in that: The converter (12) and the amplitude transformer (6) are connected by an interference fit, and a vibration rod (14) is installed on the top of the converter (12).

9. A waterproof transducer according to claim 1, characterized in that: The connection between the converter head (12) and the vibration rod (14) is an interference fit connection.

10. A waterproof transducer according to claim 8, characterized in that: The axis of the vibration rod (14), the axis of the converter head (12), the axis of the second buffer rubber ring (13) and the axis of the amplitude transformer (6) are all on the same vertical straight line.

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